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T. DARK.

SYSTEM POR COLLECTING, SEPARATING, AND'DISINEEGTINGSEWAGE N AND DRAINAGE.

No. 363, o. .Patented May s1, 1887.

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NITRO Sterns' THOMAS DARK, Or BUFFALO, NEW YORK.

SYSTEM FOR COLLECTING, SEPARATING, AND DISINFECTING SEWAGE AND DRAINAGE.

SPECIFICATION forming part of Letters Patent No. 363,810, datedMay 31, 1857. y Application man November 11, lees. sei-iai Nn. 218.545. (No modelo To @ZZ whom it may concern:

Be it known that I, THOMAS DARK, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York,

have invented certain new and useful Improvements in a System for Collecting, Separating, and Disinfecting Sewage and Drainage; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form apart of this specific-ation.

This invention is for the purpose of collecting, disinfecting, and utilizing the drainage or sewage of cities, towns, public institutions,

,850., the same comprising a series or system 'through line q q of receiving-tank, Fig. l,

showing opening to sewers; and Fig. 5, an elevation of end ot' a receiving-tank.

A A representlong sludge-reservoirs, built of brick, Sto., the bottoms narrower than above, and falling each way from the center to a pit, 7c, at each end, in which`works an elevator, G. (See Fig. 2.) I

B B represent filter-beds, made by leaving a space between the side walls, dd, built of porous brick, and porous walls d cl of a series of drains, C C C, which carry off the water that iilters from the sludge in reservoirs A A through wallsd d, the spaces or beds B B B lled in with pebbles, sand, or any filtering material, the same being put in and renewed through a series of vertical pipes, b b b, about twenty feet apart, (see Fig. 3,) opening into the filter-beds from the surface, and having proper covers.

a c c, Figs. 2 and 1 3, represent a series of man-holes leading into the reservoirs, dro., from thesurface and through the arches m m.

Across the two .ends of reservoirs A A is built a fertiliZing-tank, D, to receive the sludge, Ste., raised by the elevators G G from the reservoirs and dropped by their buckets into the tanks through openings p. (See Fig. 2.) Here the mass is mixedin with lime, Ste., thoroughly dried and deodorized, and then removed through gates and bulk-heads h 7L (see Figs. 2 and l) and sold as a fertilizer.

E isa receiving-tank, built at one side of the main works, (see Fig. 1,) into which the main sewer f leads. (See Figs. 5 and l.)

lFrom this sewers e e run into the sludgeereservoirs, two or more, or as manyas there are, so that when one is filled it is shut off by valvesj at the iron platel across the endof sewer-openings in the tank E (see Fig. 4) and the other valve j opened, which allows the stuft to drain off into the next reservoir, &c.

F is an overflow sewer-pipe leading from the receiving-tank to the main sewer, andrinto which all the drains C C C converge. (Main -sewer not shown.) The object of this pipe F- is merely to carry away the surplus water in case of ilood or more water coming into saidy tank E than can pass through the lters.

HAI J represent the devices for cleaning out the sediment in the reservoirs, for which I have a patent. The scraper I when not in use is hung up in one of the man-holes a, so as not to get fast in the sediment in the bottom.

The operation of this system is as follows: The sludge goes into the receiving-tank E through the main sewer, and thence through K and scrapers I, connected to a chain running,

over sheaves J J up to the windlasses HH. These devices work both ways and scrape the sludge into pits 7c 7c,and is from there elevated and dumped into thefertilizingtanks D at each end. Here lime, 8vo., is mixed withit and left IOO to dry. Then the bulk-heads h are removed and Wagons backed in and the fertilizer taken away and sold, thus making a revenue from matter that is otherwise a nuisance and deleterious to health.

The top of the Whole device is covered, so that no efuviaescapes, and the Windlass 4and elevators4 will also be covered with galvanized iron.

I claim- 1I.\In a system for collecting and disinfecting sewage, the combination, with a main sewer and a receiving'tank, of a series of sludge-reservoirs, A A, having porous side walls, dd, drains C C, having porous side walls, d d', the filtering-spaces B B between the porous walls d dof drains C C and porous Walls d d of reservoirs A A, filled with ltering material, and the fertiliz'ing and disinfecting tank or tanks D at each end and in connection with said reservoirs, all arranged and operating substantially as and f0.1` the purpose Witnesses:

J. R. DRAKE, HENRY HEITMUELLER; 

